Display Screen Voltage Compensation for Uniform Brightness
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Solution Overview
Problem
The brightness variation of display screens is not uniform due to abrupt changes in power voltage values, leading to brightness distortion and a negative brightness ratio, which affects user experience.
Innovation Solution
A method and apparatus that obtain an initial data voltage value and a compensation data voltage value when there is an abrupt change in power voltage, compensating the display screen to ensure uniform brightness by using these voltage values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power voltage value is adjusted to control brightness levels, then brightness adjustment function is achieved, but brightness variation becomes non-uniform due to abrupt changes in power voltage
Solution Approach 1:
The patent introduces a compensation voltage parameter that is added to the initial data voltage value when abrupt power voltage changes are detected. This parameter change compensates for the non-uniform brightness variation caused by sudden power voltage transitions, thereby maintaining uniform brightness perception across all adjustment levels while preserving the brightness adjustment function.
2Stability of the object's composition
If compensation data voltage value is added to compensate for abrupt power voltage changes, then brightness variation uniformity is improved, but device complexity increases
Solution Approach 1:
The patent pre-calculates and stores compensation voltage values corresponding to different power voltage transition scenarios before actual display operation. When an abrupt power voltage change is detected, the pre-computed compensation value is directly applied without requiring complex real-time calculations, thus improving brightness uniformity while minimizing the increase in device complexity.
Solution Approach 2:
The compensation data voltage value acts as an intermediary parameter that mediates between the initial data voltage value and the final display output. By introducing this intermediate compensation step, the patent resolves the conflict between maintaining simple device architecture and achieving uniform brightness variation across different power voltage levels.
Data Source
AI summary
A method, apparatus, device, and storage medium for driving a display screen to display. The method includes: obtaining a current level of brightness adjustment of the display screen; obtaining, under a condition that the current level satisfies a first preset condition, an initial data voltage value and a compensation data voltage value corresponding to the current level, in which the first preset condition includes that a power voltage value corresponding to the current level is different from a power voltage value corresponding to a previous level or a next level directly adjacent to the current level, the current level is a level other than a designated level; and driving the display screen to display based on the initial data voltage value and the compensation data voltage value.